Naah, let them. People use Ubuntu Studio with success to run their audio software. What is more important: you disliking Canonical, or them being able to run the software they need?

AGPL means they are licensing it to you, they are not bound by the license because they are the copyright owners.

Open the disks, take the platters out, you can smash them. Or, if you’ve been naughty, you can borrow a belt sander and sand them down to naught.